Cheetahs Combine Head Pitch Stabilisation with Predictive Yaw Tracking during High-speed Pursuit
Predators pursuing agile prey must coordinate locomotion with rapidly changing visual information, yet how they control head orientation during high-speed terrestrial pursuit remains poorly understood. We reconstructed three-dimensional head, torso, and lure target trajectories from synchronised multi-camera recordings of freely running cheetahs (Acinonyx jubatus) using model-based markerless…
When chasing swift prey, cheetahs must align their head movement with the target's position while adjusting for rapid visual changes. To better understand how they control head orientation, researchers examined high-speed chase footage of cheetahs using motion-capture cameras. The analysis of over 1,300 recorded pursuit frames revealed striking head movement strategies.
Unlike torso movement, which tracked the prey's elevation, the cheetah's head pitch remained tightly aligned with the target. Remarkably, the head and torso rotated in opposite directions, canceling out any torso pitch and maintaining the head's stable, target-relative orientation. In yaw, the cheetahs consistently positioned their heads in front of the prey's exact location while maintaining their own heading, allowing them to close the distance.
During side-to-side pursuit, the head's yaw motion was best modeled by predicting the prey's future position based on a short horizon, typically about 45 milliseconds into the future. These complementary head movement tactics—robust stabilization in the sagittal plane and predictive lateral tracking—work together to help cheetahs maintain a steady, target-focused gaze while generating a closing trajectory towards interception.
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